Deal found on August 30, 2026
San Diego to San Francisco
$38$18880% off
Round trip
SAN to SFO is typically about $168 and is showing at just $38 nonstop on Frontier, a 77% discount and slightly below the lowest fare we have on record, so it's worth confirming details before you book. It's a short coastal hop that's perfect for a quick weekend in San Francisco or wine country, with seats open over the next few months. Fares this low on this route are rare.
Travel dates
September into October
e.g. Sep 22 – Oct 1 · 9 nights
Date options
7 at this price
Lowest we've seen
$38
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